Metal-working machine



S. A. ASQUITH METAL wpRxINe MACHINE Dec. 24, 1929.

"Filed May 25 1927 5 Sheets-Sheet 2 INVENTOR. 5A. ASOU/TH I A TTORNE Y.

Dec. 24, 1929. s. A. ASQUITH METAL WORKING MACHINE Filed May 25, 1927 5Sheets-Sheet 5 i mm IIIIIIIIL I N V EN TOR. 5. A. HSQU/ TH A TTORNE Y.

Dec.v24, 1929. s. A. ASQUITH METAL WORKING MACHINE 5 Sheets-Sheet 4Filed May 25, 1927 7 ul l INVENTOR. 5. r9. fiSQU/TH A TTORNEY.

Dec. 24, 1929. s. A. ASQUITH METAL WORKING MACHINE Filed May 25, 1927 5Sheets-Sheet 5 V I m, r l W:

INVENTOR. 5. A. FISQU TH Patented Dec. 24, 1929 UNITED STATES PATENTOFFICE METAL-WORKING MACHINE Application filed May 25, 1927. Serial No.194,092.

This invention relates to improvements in metal working machines.

The general object of this invention is to provide a metal workingmachine having a work support which is movably supported by a system ofparallel links.

A more specific object of my invention is to provide ametal workingmachine having a movable work support and wherein a pantograph mechanismmay be attached for imvide in combination with a metal working machine amovable work support means whereby a pattern may be clamped on the worksupport and moved relative to an indicator, thereby causing the work tomove relative to the punch along the same lines as the pattern movesrelative to the indicator.

Another object of this invention is to provide a novel metal workingmachine having a reciprocating plunger and a rotatable spindle drivenindependently from the same source of power.

Another object of this invention is to provide a novel system of quickchange pulleys for varying the actuating speed of a metal workingmachine.

Other objects and advantages of this invention will be apparent from thefollowing description taken in connection with the accompanying drawingswherein:

Fig. 1 is a side elevation of a machine embodying the features of myinvention.

Fig. 2 is a front view of the machine.

Fig. 3 is a side elevation of the machine showing the side opposite tothat shown in Fig. 1.

Fig. 4 is a section of my device taken on line l of Fig. 1, showing theparallel link support for the work supporting table.

Fig. 5 is a top plan view of the device showing the pantograph machineoperably attached to the work supporting table.

Fig. '6 is an enlarged section of the punch mechanism taken on line 66of Fig. 1.

Fig. 7 is aside elevation partly in section of the punch mechanism shownin Fig. 6.

Fig. 8 is an enlarged fragmentary side elevation partly in section ofthe vertical rotatable spindle mechanism of my device.

Fig. 9 is an enlarged section taken on line 99 of Fig. 8.

Fig. 10 is an enlarged side elevation of the electric motor for drivingmy device.

Fig. 11 is a section of the motor raising and lowering mechanism takenon line 11-11 of Fig. 10.

Fig. 12 is a front elevation of the motor raising and loweringmechanism.

Fig. 13 is an enlarged top plan view partly in section of a catchmechanism for retaining the motor in an adjusted horizontal position.

Fig. 14 is a fragmentary section taken on line 14:14 of Fig. 10 showingthe motor pivot and clamping means.

Fig. 15 is an enlarged sectional view of one of the work supportingtable bearings showing the means for detachably securing the pantographmachine thereto.

Fig. 16 is a section taken on line 16-16 of Fig. 15.

Fig. 17 is an enlarged view of the pantoframe 11 supported on a base 12which may 0 be of any desired form. The U-frame 11. supports a punchingmechanism shown in detail in Figs. 6 and 7 as comprising a reciprocatingplunger 13 adapted to actuate the male die 14, a female die 15 and astripper 16. The male die member 14 is preferably detachably secured tothe plunger 13 as by set screws 17 or in any other suitable manner. Thefemale die portion 15 is shown as detachably secured to the -Uirame 11by bolts 18.

The particular construction and manner of securing the various diemembers may be changed to suit various sizes of machines and forms noimmediate part of this invention.

The stripper 16 may be rigid or it may be mounted to swing as shown inFigs. 6 and 7. The stripper 16 shown is pivotally secured to the frame11 by a bolt 19 and to clamp the stripper in a rigid position I provideanother bolt 20. To allow for a pivotal movement of the stripper aboutthe bolt 19 I provide in the stripper a radial slot 21 through which theclamping bolt passes.

To allow for a vertical adjustment of the stripper to accommodatevarious thicknesses of metal, I may if desired provide elongated slots22 adjacent to the bolts 19 and 20. A slot 23 is also provided in thestripper through which the punch 14 passes. This allows the stripper toswing out of the way of the punch when the latter is being detached orattached to the plunger 13.

Vertical reciprocating movement may be imparted to the plunger 13 from afly Wheel 26in any desired manner. As shown in the accompanying drawingsthe plunger '13 is pivotally connected as at 27 to a member 28 which ismounted on an eccentrically arranged reduced'end portion 29 of a shaft30. As the-shaft 30 revolves the eccentric end portion 29 impartsoscillating motion to the member 28 which in turn causes the plunger 13to reciprocate.

The reduced end portion 29 may be mounted in anti-friction bearings 31in the member 28 and the shaft 30 may be mounted in antifriotionbearings 32 in the frame 11. The fly wheel 26 and the shaft 30 are shownas connected through the medium of a punch press trip 33 which may be ofany desired 7 standard form. For actuating the trip pin 34 of the tripmechanism 33 I have shown in Figs. 1 and 3 a foot lever 35 pivoted tothe base 12 and connected to the pin 34 by a 'cord 36. The free end ofthe foot lever 35 is shown as resiliently supported'by a coiled spring36 attached thereto and anchored to the base 12. The fly wheel 26 isshown as driven by a belt 37 from a pulley 38 on the shaft of a motor39.

The motor 39 is supported by a bracket 40 to which it is pivotallysecured by a stud 41 and anut 42 (see Figs. 10 and 14). For retainingthe motor 39 in an adjusted position relative to the bracket 40 I haveshown a" pair 49 is supported by the bracket 40 and is provided with acrank arm 50 for rotating the same and turning the pinion 48 to causethe bracket 40 to move either up or down the rod 46. For retaining thebracket 40 at the desired height I provide a ratchet wheel 51 secured tothe shaft 49 and engaged by a spring pressed pawl 52 which preventsmovement of the ratchet wheel 51 in the direction to cause the bracketto be lowered, until it is moved out of engagement with the ratchetwheel.

With this construction the motor 39 may be raised to tighten the belt 37or adjusted to Various heights to compensate for the clifference insizes of my quick change pulleys which will be more fullyexplainedhereinafter.

The rod 46 is preferably rotatably mounted in a bearing 53 integral withthe frame 11. This allows the motor 39 to have horizontal movement aboutthe axis of the rod 46 for a purpose to be hereinafter more fullyexplained. For retaining the motor in an adjusted horizontal position Iprovide a novel form of latch mechanism indicated generally at 54' andshown in detail in Fig. 13.

This latch mechanism comprises a pair of arms 55 pivotally supported ona member 56 and provided with apertures 57 through which a rod 58passes. The member 56 is pivotally connected as at 59 to a yoke 60 whichis in turn supported and pivotally secured to the motor-39 by a screw61. This mounting of the member 56 allows the arms to have a universalmovement. The arms 55 are adapted to be normally urged apart by a coiledspring 62 arranged about'the rod 58. The end of the rod 58 farthest fromthe motor is provided with an eye 63 which fits around a reduced endportion 64 of a vertical rod65' supported in a bearing 66 integral withthe frame 11. The rod 58 is supported by the shoulder at the juncture ofthe reduced end portion 64 and may be prevented from becoming displacedby a cotter pin 67 or in any other suitable manner.

Normally the edges of the apertures 57 in the pivoted arms 55'are causedto be wedged against the rod 58 by the coiled spring 63 and thus beimmovable along the rod 58 thereby preventing horizontal movement of themotor 39.

To swing the motor 39 horizontally about the axis of the rod 46 it isonly necessary to compress the pivoted arms 55 to the dotted lineposition shown 'in Fig. 13, and then the motor may-be moved to thedesired position. Upon a release 'of the arms 55they will again graspthe rod 58' and retain the motor in a fixed horizontal position.

For supporting the material to be operated upon by the punch I provide awork support or table 68. This work support or table 68 is supported bya parallel link means through the medium of which the table 68 may bemoved to any desired position and yet retain the parallel relation tothe punch machine. This parallel link means comprises a pair of arms 69each of which have pivotal engagement with one of a pair of spacedtrunnions 70 secured to the table 68 (see Fig. 15).

Anti-friction bearings 71 are preierably provided for ease of operationand durability. The arms 69 are pivotally connected as at 72 to anannulus 73 which is supported by a pair of arms 74 with which it haspivotal en gagementas at 75.

The arms 74 are pivotally mounted on a pair of spindles 76 (see 4) whichare mounted in bearings integral with the base 12. Anti-frictionbearings may be provided at the pivotal points 72, and 7 6. fordurability and ease of operation. The ends of the arms 7 1 adjacent thepivotal. points 75 may be sup ported by a ball 77 (Fig. 2) in a groove78 of the arms and adapted to operate in other grooves 79 in a track 80(see Figs. 2 and 1). Qn the smaller machines of this class it is notnecessary to support the outer ends of the arms 74 andtherefore thetrack 79 and its component parts may be eliminated.

A piece of work 81 which is to be operated upon by the punch is shown assecured to the table 68 by a plurality of hand clamps 82 and a pattern83 of the design to be punched in the work 81 is also shown as securedto the table 68 by the clamps 82. Any suitable manner of securing thework and the pattern to the table 68 may be employed to meet variousrequirements.

For moving the work 81 below the punch in accordance with the design ofthe pattern I provide an indicator 8& loosely mounted ina hollow stem 85of which is supported by a rod 86. The rod 86 is reciprocatably androtatably mounted in bearings 87 integral with the frame 11 and isadapted to be retained in a fixed position by a hand clamp 88.

. As both the work 81 and the pattern 83 are clamped to the table 68 thework will be moved beneath the punch when the pattern is shifted beneaththe indicator 8 1 in accordance with the design of the pattern. Vhen thework and the pattern are both clamped to the table A 68 the designpunched in the work will be I 1dent1cal in size to the design on thepattern.

For the purpose of punching the design in the work on a larger orsmaller scale than the size of the design on the pattern I have provideda scale changing device shown as a ,pantograph i'nachine 89 in Fig. 0.

7 This pantograph machine 89 is of the usual type having a tracer arm 90pivotally and directly connected to an operating arm 91 and furtherconnected to the operating arm 91 through the medium of an adjustablelink 98 and a i link 93.

The link 93 is dovetailed and is sli'dable within dovetailed groove in amembert e which is pivotally secured to the base 12. The link 93 isadapted to be clamped in fixed relationship relative to the member 94 bya set screw 95. Anti-friction bearings 96 may be provided for the member9 1 to pivot on as shown in Big. 17.

The link 93 has pivotally secured to one of its ends a member 97 similarto the member 9%, having therein a dovetailed groove within which thedovetailed sides of the operating arm 91are slidably mounted. The member97 is shown as adapted to be retained in a fixed position along the arm91 by a set screw 98. The arm 91 is shown as detachably secured to oneof the trunnions 70 of the table 68. As shown in 15 and 16 the arm 91 isprovided with a pair of members 99 and 100 pivoted thereto at 101. Themembers 99 and 100 are adapted to surround an antifriction bearing 102on the trunnion 70 and be secured together by a bolt 103 and a nut 10%.With this construction the pantograph machine 69 may be readily attachedto and detached from the work table 68 of my device.

When the pantograph machine 89 is used the work 81 is clamped to themovable table 68 as previously described, while the pattern 88 issecured to a stationary table 104. As the indicator 1041 on the tracerarm 90 is moved to follow the design of the pattern 83 the work table 68will be moved accordingly, hereby moving the work thereupon below thepunch along the same lines as the lines of the design and cause thedesign to be punched in the work either on a smaller or larger scale,depending on the set given to the pantograph arms.

I may also provide my improved device with a rotatable spindle 105 whichmay be used either for drilling or milling. The spindle 105 is adaptedto rotate by means of a spline 106 a sleeve 107 to which a tool holdingchuck 108 is secured. The sleeve 107 is mounted in and supported byantifriction bearings 109 in a reciprocatable sleeve 110. The sleeve 110is mounted in a bearing 111 of a bracket 112 integral with the frame 11and is prevented from turning by a pin 113 which works in a groove 11%of the sleeve. The sleeve 110 is provided with gear teeth 115 and isadapted to be reciprocated by a pinion 116 in mesh with the gear teeth115. The pinion 116 is secured to a shaft 117 having a handle 118thereon by which it may beturned to rotate the pinion 116. For normallyretaining the sleeve 110 in a raised position I provide a. coiled spring119.

When milling out a piece of work the lat ter may be clamped to the table68 and the When milling work isthus set the work will be movedheneaththe milling cutter along the same lines as the design of thepattern. For milling or drilling a stationary piece of work I provide abracket 120 (see Fig. 3) secured to the frame 11 below the rotatablespindle 105.

For rotating the spindle 105 I provide on the upper end thereof a pulley121 which may be identical with the pulley 38 on the motor shaft. Torotate the spindle 105 the motor 39 is swung on its pivot 41 from theposition shown in Fig. 1 to the position shown in Fig. 3 and a belt 122is run from the motor to the pulley 121 to rotate the same.

For changing the speed at which either the punch or the spindle 105 isoperated I provide a plurality of various sized pulleys 123 preferablyof the construction shown in Fig. 18. The hubs of these pulleys 123 areall bored to fit over the belt carrying portion of either the pulleys 38or 121. These pulleys 123 are adapted to be secured to the pulleys 38 or123 by a novel form of set screws 124. Vith a set of pulleys of thistype a great variety of speeds may be obtained and they are quicklyattached and detached.

Although I have shown and'described certain minor details in theconstruction of my device I wish it to be understood that the details ofconstruction may be varied to suit various requirements within the scopeof my invention.

From the foregoing description it will be apparent that I have provideda device 1ncluding many new and novel features which is simple inconstruction, sturdy and efficient in operation.

What I claim is:

1. In combination with a device having a vertical reciprocatableplunger, a fly wheel for drivin said plunger, a rotatable spindle, meansto cfrive said fly wheel, said means being also adapted to rotate saidspindle, said drive means including an electric motor, a bracket, meansto pivotally mount said motor on said bracket, means to mount saidbracket for vertical movement, means to retain said motor in a fixedrelationship to said bracket when the motor is moved on its pivot, meansto vertically move said bracket and means to retain said bracket inadjusted position.

2. A machine including a tool holder, means to drive said tool holder, amovable table adapted to support work to be operated upon by said toolholder, an indicator, and means whereby when a piece of work and apattern are secured to said table and said table is moved to cause saidpattern to move relative to said indicator said work will becorrespondingly moved relative to said tool holder.,

3. A machine including a reciprocatable tool holder and a rotatable toolholder, means to drive said reciprocatable tool holder and saidrotatable tool holder, amovable table adapted to support work to beoperated upon by either of said tool holders, an indicator, and meanswhereby when a piece of work and a pattern are secured to said table andsaid table is moved to cause said pattern to move relative to saidindicator said work will be correspondingly moved relative to either ofsaid tool holders.

41:. A machine including a frame, a tool holder on said frame, a tool insaid holder,

.caused to correspondingly move relative to said tool carried by saidtool holder.

5; A machine including a frame, a tool holder on the frame, a motor,means to drive said tool holder from said motor, means to support saidmotor for vertical movement and for adjustment about a horizontal axis,a movable work table, means to support said table, said means includinga pair of spaced parallel arms, said table and said arms being pivotallyconnected, an element pivotally connected to said pair of arms, a secondpair of spaced apart arms pivotally connected to said element, saidsecond pair of arms being supported by said frame and pivotallyconnected thereto, an indicator adjacent to said table to register witha pattern on said table whereby when said table ismoved to cause saidpattern to move relative to the indicator the work secured to said tablewill be caused to correspondingly move relative to said tool carried bysaid tool holder.

6. A machine including a frame, a reciprocatable plunger associated withsaid frame, means on said plunger for securing a tool thereto, means forreciprocating said plunger, a movable work table, a pair of spacedparallel arms supporting said table and pivotally connected thereto, anelement pivotally connected to said arms, a second pair of spaced armsand pivotally connected to said element said second pair of arms beingpivotally connected to said frame, a bar supported on said frame, saidbar being movably mounted, means for retaining said bar in a fixedposition relative to said bearings, an indicator supported adjacent oneend of said bar, said indicator adapted to register with a patternsecured to said table whereby when said table is moved to cause saidpattern to move relative .to said indicator the work secured to saidtable willbecaused to correspondingly move relative to said tool carriedby said reciprocatable plunger.

7 A machine including a frame, a tool holder, a motor, means to drivesaid tool holder from said motor, a vertical rod rotatable on saidframe, a bracket adjustable on said rod, means to mount said motor onsaid bracket for movement about a horizon tal axis, means for retainingsaid motor in ri id relationship to said bracket, means to normallyprevent movement of said motor about the axis of said vertical rod saidmeans being releasable to allow such movement of said motor, a movablework table, means to support said table said means including a pair ofspaced apart parallel arms, said table and said arms bein pivotallyconnected, an element pivotally connected to said pair of arms, asecondpair of spaced apart arms pivotally connected to said element, saidsecond pair of arms being supported by said frame and pivotallyconnected thereto, an indicator adjacent to said table to register witha pattern on said table whereby when said table is moved to cause saidpattern to move relative to said indicator the work secured to saidtable will be caused to correspondingly move relative to said toolcarried by'said tool holder.

8. A machine including a frame, a tool holder associated with saidframe, a motor, means to drive said tool holder from said motor, abearing on said frame, a vertical rod in said bearing, a bracket on saidrod, means to mount said motor on said bracket for movement about ahorizontal axis, means for retaining said motor in rigid relationship tosaid bracket, a second vertical rod rigidly supported by said frame, ahorizontal rod supported at one end on said second rod, means on saidmotor engaging said horizon tal rod adjacent its other end, means tonormally tightly engage said rod to prevent movement of said motor aboutthe axis of said vertical rod said means being releasable to allow suchmovement of said motor, said means at all times allowing said motor toswing about its said horizontal pivotal axis on said bracket, a movablework table, means to support said table said means including a pair ofspaced apart parallel arms, said table and saidarms being pivotallyconnected, an element pivotally connected to said pair of arms,'a secondpair of arms being supported by said frame and pivotally connectedthereto. l

9. A machine including a frame, a tool holder, a motor, means to drivesaid tool holder from said motor, a vertical rod on said frame, a.bracket adjustable on said rod, means to hold said bracket in adjustedposition on said rod, means to mount said motor on said bracket for vmovement about a horizontal axis, means for retaining said motor inrigid relationship to said bracket, a second vertical rod rigidlysupported on said frame, a horizontal rod supported at one end on saidsecond rod, means on said motor adjustably engaging said horizontal rodto prevent movement of said motor about the axis of said vertical rod, amovable work table, means to support said table said means including apair of spaced apart parallel arms, said table and said arms beingpivotally connected, an element pivotally connected to said pair ofarms, a second pair of spaced apart arms pivotally connected to saidelement, said second pair of arms being supported by said frame andpivotally connected thereto, an indicator supported adjacent-to saidstool holder, said indicator adapted to register with a pattern securedto said table whereby when said table is moved to cause said pattern tomove relative to said indicator the work secured to said table will becaused to correspondingly move relative to a tool carried by said toolholder.

10. A machine including a frame, a reciprocatable plunger associatedwith said frame, means on said plunger for removably securing a toolthereto, a rotatable shaft supported by said frame, means connectingsaid shaft and saidreciprocatable plunger whereby upon the rotation ofsaid shaft said plunger will be reciprocated, a fly wheel adapted todrive said shaft, clutch means between said shaft and said fly wheel andmeans to actuate said clutch, a motor, a ulley on the shaft of saidmotor, means to cli ivesaid fly wheel from said pulley, a bearing onsaid frame, a vertical rod in said bearing, a bracket on said rod forsupporting said motor, means to mount said motor on said bracket, formovement about a horizontal axis, means for retaining said motor inrigid relationship to said bracket, said rod having a rack thereon, agear secured to a shaft supported by said bracket, said rack and'saidgear being in engagement, means for rotating said gear shaft, releasablemeans on said shaft coacting with means on said bracket for normallypreventing rotation of said shaft in one direction, a second verticalrod rigidly supported by said frame, a horizontal rod supported at oneend on said second rod, means on said motor engaging said horizontal rodadjacent its other end, said last mentioned means being adapted tonormally'tightly engage said rod to prevent movement of said motor aboutthe axis of said vertical rod, said means being releasable to allow suchinovement of said motor, said means at all times allowing said motor toswing about its horizontal pivotal axis on said bracket, a movable work.table, means to support said table said means including a pair ofspaced apart parallelarms, said table and said arms being pivotallyconnected, an element pivotally connectedto said pair of arms, a secondpair of spaced apart arms pivotallyconnected to said element, saidsecond pair of arms being supported by said frame and pivotallyconnected thereto, a horizontal bar supported in bearings integral withsaid frame, said bar being mounted for rotation and horizontalreciprocation in said bearings, means for retaining said bar in a fixedposition relative to said bearings, an indicator supported adjacent oneend of said bar, said indicator adapted to register with a patternsecured to said table whereby when said table is moved to cause saidpattern to move relative to said indicator the work secured to saidtable will be caused to correspondingly move relative to said toolcarried by said reciprocatable plunger.

11. In combination with a punch press including a frame and a verticalreciprocatable punch member, a stripper adjacent said punch member, saidstripper including a horizontal foothaving an a Jerture therein throughwhich said punch ember passes, said stripper being mounted for pivotalmovement about a horizontal axis and means to retain said stripper in afixed position.

12. In combination with a punch press including a frame and a verticalreciprocatable punch member, a stripper adjacent said punch member, saidstripper including a horizontal foot and a vertical portion, said foothaving an aperture therein through which said punch member may pass,said vertical portion be ing pivotally secured to said frame andadapted' to be swung about a horizontal pivot, and means whereby saidstripper may be vertically adjusted. v

' 13. In combination with a stationary frame a movable tool holdingmeans supported by the stationary frame, a movable table adapted tosupport work to be operated upon by a tool associated with said toolholding means, a pair of spaced parallel arms supporting said table andan element pivotally connected to said arms, a second pair of spacedarms pivotally connected adjacent one of their ends to said element andsaid second pair of arms pivotally secured adjacent their other ends tosaid stationary frame, and means for supporting said second pair of armsadjacent their conenction to said element, said means comprising trackssupported by said frame, a groove in each track and a groove in each ofsaidsecond arms and a movable member in each of said grooves in saidarms and adapted to move in a groove in one track.

I 14 In combination with a metal working machine including a frame, amotor arranged to drive said machine and supported by said frame, saidmotor being movable horizontally and means to retain said motor in anadjusted horizontal position, said means comprising a bracket pivotallymounted on said motor, another bracket pivotally mounted on said firstmentioned bracket, a pair of spaced arms pivotally mounted on saidsecond bracket, each of said arms having an aperture therethrough, ahorizontal rod passing through said apertures in said arms and resilientmeans normally urging said arms apart to cause the edges of saidapertures to grip said rod and prevent horizontal movement of saidmotor, said arms upon a movement towards each other being adapted torelease their grip on said rod whereby said motor may be movedhorizontally, said rod supported at one end by an element supported bysaid frame, and said rod being movable relative to said element.

15. Incombination witha metal working machine, a support, a tool holdingmember on said support, a motor for driving said tool holding member,means to drive said member from said motor, said means including spacedpulleys, and a series of various sizedinterchangeable auxiliary pulleysadapted to fit on said first pulleys to vary the speed of the drivenmember, a single one of said auxiliary pulleys including a belt carryingportion and a central aperture, said central aperture being of a size tofit over the belt carrying portion of either said first mentionedpulleys or said auxiliary pulleys and meansto hold said auxiliarypulleys in place. 7 V

16. In combination with a metal working machine, a support, areciprocatable tool holding means and a rotatable tool holding means onsaid support, a common drive means for said reciprocatable toolholderand said rotatable tool holder, said common drive means comprising anelectric motor having a pulley on the drive shaft thereof, a fly wheelfor driving said reciprocatable tool holder adapted to be driven fromsaid pulley on said motor shaft, a second shaft adapted to drive saidrotatable tool holder and a pulley on said second shaft driven from saidmotor shaft, the belt carrying portion of said first mentioned pulleyand said second mentioned pul-, ley being of the same diameter, a seriesof interchangeable auxiliary pulleys adapted to fit on the belt carryingportion of each of said first mentioned or said second mentioned pulleysto Vary the speed of the driven member, a single one of said auxiliarypulleys including a belt carrying portion and a central aperture, saidcentral aperture being of a size to fit over the belt carrying portionof either said first mentioned pulley or said second mentioned pulley, ascrew threaded bore in said auxiliary pulley communicating with saidcentral bore, a screw threaded spindle in said screw threaded bore andan annulus on said spindle by which said spindle is adapted to berotated, said annulus extending out from either side of the body portionof; said pulley intermediate said belt carrying portion and saidcentral'bore.

17. In combination with a device including a vertical reciprocatableplunger having a tool holder associated therewith, a fly wheel, meansconnecting said fly wheel and plunger to reciprocate the latter, avertical rotatable spindle having a tool holder associated therewith,means to rotate said spindle, a motor mounted for swinging movement toeither of two positions, means to drive said fly wheel from the motorwhen the motor is in one position, and means to rotate said spindle fromthe motor when in another position.

18. In a metal working machine, a reciprocatable tool holding means, arotatable tool holding means associated with said first means, a commonmeans to drive said reciprocatable tool holder and said rotatable toolholder, a work table for supporting work to I be operated upon by eitherof said tool holding means, a parallel link construction for movablysupporting said table whereby said table may be moved relative to eitherof said tool holding means and still retain its same relativerelationship to both of said tool holding means, an indicator meanswhereby when a piece of work and a pattern are secured to said table andsaid table is moved to cause said pattern to move relative to saidindicator said work will be correspondingly moved relative to each ofsaid tool holding means.

In testimony whereof, I hereunto aflix my signature.

STEAD A. ASQUITH.

